compositions



gnome F. snutrnn, oFNEw YORK, 3ST. Y.

84 COMPOSITION FROM MINERAL, WOOL FOR JOURNAL-BEARING? f of mineral wool sometimes called 'sla cot-- I ,4 ton which is a substance obtained rom IIOII. "1 20 or nrnaco sla three parts, by weight, and

1 5 of saturating the UNITED STATEs Cros PATENT OFFICE.

srscmrcs'rrou forming part of Iiett ers Patent No. ess'eoefama December 2c, 1880.

'- Application-filed-lhy-MriBBO. 6H0

. To all whom it may concern:

Be it known that I, GEORGE F. SENTER, of the city, county, and State of New York, have invented a new and useful Improvement 5 in Composition from Mineral Wool for' Journal-Bearings, of which the following is such a full, clear, and exact description as will enable others skilled in the art to which it most nearly appertains to make and use the same. My in vention consists of a composition hereinafter described, of pressing that composition into a solidified form, and of making jourrial-bearings, packin gs, and similar articles by combining it in retaining boxes or shells, and

articles thus made with unctuous matter.

The composition is made as follows: I take mix itwlth one part of plumbago. These two materials are thenwe mixe or ground together. silicate ot soda or liquid silicate of potash, sometimes called wateras In su cient quantity to make of the composition a thick paste. This paste is then pressed iira mold or form sufliciently, by a hydraulic or other press, to compress it into a firm and com.-

.I then add to this mixture liquid pact mass, which gives it a suflicient solidity to be successfully used for packings, journalhearings, or other working-surfaces for any kind of machinery.

The bearing or other article it is desired to make may be pressed from the plastic composition above described. A retaining case or shell is made, of suitable size, into which the composition is pressed by sufficient pressure to form it into a hard compact material, and

40 firmly attach it to the case or shell, into which it is pressed, at mandrel of the form of the journal or other surface which is to work on the surface of the composition being pressed on it at the same time, so that the hearing or 5 other article will have a surface corresponding with the working-surface which is to come against it.

The bearing or other article-may be cut from blocks of the above-described material, shaped to correspond with the working-surface and to accurately fit the retaining box or shell. After the composition shall have been pressed and thoroughly dried it should be dipped in hot melted ,paralfine ozocerite,

5 wax or other suitable nnctuoiis m'att'rT br into a solution of any of these substances,

which are used to stop up and fill the pores of the material of which the bearingor packing is made. If desired, the bearing or packing so made may be put inan exhaust or vacuum chamber, and when the air is exhausted therefrom the unctuous filling-matter above described being introduced will fill the mateto pressuraail'd treat-in the manner above set forth; or I may use one part of powdered mica- .two parts of'mgmra l ool, with one part of plumbagp an treat as above set forth. ie proportion of the soapstone and mica added to the composition maybe varied from those stated, according as the bearing is for fast or slow, light or heavy machinery.

The proportion above stated, in which the different ingredients are to be mixed, may be varied to suit diflerent machinery in which it is to be used.

The material above described will be nonheating, and will not require oil or other Inbricant to aid the free working of the working parts.

Blocks of the material may be made and sold, from which the hearings or packings shall be cut.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A composition consisting of mineralwool, plumbago, and w'at'erglass, substantially as specified and set forth.

2. The substance made by mixing-mineral wool, plumbago, and water-glass and subjecting the compound thus made to pressure, substantially as" specified and set. forth.

,3. The bearing made by compressing a mixture of mineral wool, plumbago, and waterglass, and filling the interstices or pores of this material, when dry, with paraifine or other unctnous material, substantially as specified. 4.- As an article of manufacture, a containing-case combined with the non-heating and anti-friction compound above described.

G. F. SENTER.

Witnesses:

JOSEPH J. SULLIVAN, James E. Damon.-

Examiner 

